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laetus, Taxa Only, Exact Match: 97 Treatments

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Termitozophilus laetus     Zilberman, Bruno, 2019, Synopsis of the genus Termitozophilus Silvestri (Coleoptera, Staphylinidae, Aleocharinae, Corotocini), Zootaxa 4614 (1), pp. 95-116 : 97-100 97-100
Hydrodessus laetus   sp. n.  Miller, Kelly B., 2016, Revision of the Neotropical diving beetle genus Hydrodessus J. Balfour-Browne, 1953 (Coleoptera, Dytiscidae, Hydroporinae, Bidessini), ZooKeys 580, pp. 45-124 : 86-87 86-87
Torymus laetus     Dale-Skey, Natalie, Askew, Richard R., Noyes, John S., Livermore, Laurence & Broad, Gavin R., 2016, Checklist of British and Irish Hymenoptera - Chalcidoidea and Mymarommatoidea, Biodiversity Data Journal 4, pp. 8013-8013 : 8013 8013
Kristotomus laetus     Yurtcan, M., Kolarov, J. & Beyarslan, A., 2006, Tryphoninae species from Turkish Aegean region (Hymenoptera, Ichneumonidae), Linzer biologische Beiträge 38 (1), pp. 985-990 : 988 988
Sciapus laetus     Pollet, Marc, Andrade, Rui, Gonçalves, Ana, Andrade, Pedro, Jacinto, Valter, Almeida, Jorge, Braekeleer, Anja De, Calster, Hans Van & Brosens, Dimitri, 2019, Dipterological surveys in Portugal unveil 200 species of long-legged flies, with over 170 new to the country (Diptera: Dolichopodidae), Zootaxa 4649 (1), pp. 1-69 : 51 51
Thrypticus laetus     Negrobov, Oleg P. & Naglis, Stefan, 2020, Two new species of Thrypticus Gerstäcker from Turkey (Diptera, Dolichopodidae) with checklist and key to Palaearctic species, Zootaxa 4858 (1), pp. 111-125 : 119 119
Conocephalus laetus     Hugel, Sylvain, 2009, Gryllacrididae and Tettigoniidae (Insecta, Orthoptera, Ensifera) from Espiritu Santo, Vanuatu, Zoosystema 31 (3), pp. 525-576 : 564 564
Dacnochilus laetus     Navarrete-Heredia, José Luis, Gómez-Rodríguez, Cecilia & Newton, Alfred F., 2006, Staphylinidae (Insecta: Coleoptera) of the Biologia Centrali-Americana: Current status of the names, Zootaxa 1251 (1251), pp. 1-70 : 45 45
Cephaloplopus laetus   gen. nov.  Frank H. Hennemann, Oskar V. Conle & Daniel E. Perez-Gelabert, 2016, Studies on Neotropical Phasmatodea XVI: Revision of Haplopodini Günther, 1953 (rev. stat.), with notes on the subfamily Cladomorphinae Bradley & Galil, 1977 and the descriptions of a new tribe, four new genera and nine new species (Phasmatodea: “ Anareolatae ”: Phasmatidae: Cladomorphinae), Zootaxa 4128 (1), pp. 1-211 : 52-54 52-54
Anisodactylus laetus     Bousquet, Yves, 2012, Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico, ZooKeys 245, pp. 1-1722 : 654 654
Amblydromalus laetus     Moraes, Gilberto José De, Barbosa, Marina Ferraz De Camargo & Castro, Tatiane Marie Martins Gomes De, 2013, Phytoseiidae (Acari: Mesostigmata) from natural ecosystems in the State of São Paulo, Brazil, Zootaxa 3700 (3), pp. 301-347 : 317 317
Oxycoleus laetus     Monné, Miguel A. & Monné, Marcela L., 2016, Checklist of Cerambycidae (Coleoptera) primary types of the Museu Nacional, Rio de Janeiro, Brazil, with a brief history of the collection, Zootaxa 4110 (1), pp. 1-90 : 27 27
Perissus laetus     Gupta, Rajeev & Vitali, Francesco, 2017, The checklist of longhorn beetles (Coleoptera: Cerambycidae) from India, Zootaxa 4345 (1), pp. 1-317 : 54 54
Torymus laetus     Dale-Skey, Natalie, Askew, Richard R., Noyes, John S., Livermore, Laurence & Broad, Gavin R., 2016, Checklist of British and Irish Hymenoptera - Chalcidoidea and Mymarommatoidea, Biodiversity Data Journal 4, pp. 8013-8013 : 8013 8013
Characiformes   new species  Cope, Edward Drinker, 1872, On the fishes of the Ambyiacu River, Proceedings of the Academy of Natural Sciences of Philadelphia 23, pp. 250-294 : 257 257
Onthophagus laetus     Strümpher, Gimo M. Daniel Werner P. & Josso, Jean-François, 2023, Dung beetle fauna from Mount Mabu, Mozambique. Part 1: A new species of Onthophagus Latreille, 1802, and a checklist of species belonging to group 3 (d’Orbigny 1913) (Coleoptera: Scarabaeidae: Scarabaeinae), Zootaxa 5258 (4), pp. 429-442 : 438 438
Stirellus laetus     Duan, Yani, Zhang, Yating & Dietrich, Christopher H., 2019, Six new species of Stenometopiini (Hemiptera: Cicadellidae: Deltocephalinae) with redescription of additional species and new distributional records, Zootaxa 4603 (2), pp. 201-240 : 220 220
Jeremiodes laetus     Hennemann, Frank H. & Conle, Oskar V., 2024, Studies on Neotropical Phasmatodea XXVI: Taxonomic review of Cladomorformia tax. n., a lineage of Diapheromerinae stick insects, with the descriptions of seven new genera and 41 new species (Phasmatodea: Occidophasmata: Diapheromerinae), Zootaxa 5444 (1), pp. 1-454 : 84 84
Thrypticus laetus     Kejval, Zbyněk & Pollet, Marc, 2024, Long-legged flies (Diptera: Dolichopodidae) in the Czech Republic- 2. Corindia and Thrypticus, Zootaxa 5432 (3), pp. 411-424 : 419-420 419-420
Aethiopicodynerus laetus     Usenleitner, Gusenleitner, J. & Madl, M., 2009, A Catalogue of the Eumeninae (Hymenoptera: Vespidae) of the Ethiopian Region excluding Malagasy Subregion. Part I: Introduction, Key to Genera, Genera Aethiopicodynerus GUSENLEITNER 1997 to Cyrtolabulus van der VECHT 1969, Linzer biologische Beiträge 41 (1), pp. 513-638 : 522 522
Anomiopus laetus     Hielkema, Auke J. & Hielkema, Meindert A., 2019, An annotated checklist of the Scarabaeoidea (Insecta: Coleoptera) of the Guianas, Insecta Mundi 732 (732), pp. 1-306 : 59 59
Mecyclothorax laetus     Liebherr, James K., 2015, The Mecyclothorax beetles (Coleoptera, Carabidae, Moriomorphini) of Haleakala-, Maui: Keystone of a hyperdiverse Hawaiian radiation, ZooKeys 544, pp. 1-407 : 139-140 139-140
Pholetesor laetus     Broad, Gavin R., Shaw, Mark R. & Godfray, H. Charles J., 2016, Checklist of British and Irish Hymenoptera - Braconidae, Biodiversity Data Journal 4, pp. 8151-8151 : 8151 8151
Cryptocephalus laetus     Ruchin, Alexaner B., Egorov, Leonid V., Alekseev, Sergei K., Semishin, Gennadiy B. & Esin, Mikhail N., 2021, Notes on the fauna of beetles (Insecta, Coleoptera) adjacent to the territory of the Mordovia State Nature Reserve, Amurian Zoological Journal XIII (1), pp. 12-35 : 29 29
Ceraticelus laetus     Dean, David Allen, 2016, Catalogue of Texas spiders, ZooKeys 570, pp. 1-703 : 188 188
Orthorhinus laetus     Kuschel, Guillermo, 2008, Curculionoidea (weevils) of New Caledonia and Vanuatu: Basal families and some Curculionidae, Mémoires du Muséum national d'Histoire naturelle 197, pp. 99-250 : 199 199
Isocyrtus laetus     Dale-Skey, Natalie, Askew, Richard R., Noyes, John S., Livermore, Laurence & Broad, Gavin R., 2016, Checklist of British and Irish Hymenoptera - Chalcidoidea and Mymarommatoidea, Biodiversity Data Journal 4, pp. 8013-8013 : 8013 8013
Hymenoptera   new species  Walker, Francis, 1833, Monographia Chalciditum. (Continued.), The Entomological Magazine 1, pp. 115-142 : 115-142 115-142
Zelotes laetus     Dean, David Allen, 2016, Catalogue of Texas spiders, ZooKeys 570, pp. 1-703 : 166 166
Nacaeus laetus     Asenjo, Angélico, e, Sistemática, de, Bioecologia, Coleoptera, Zoologia, Federal, Universidade, Cep, Curitiba, Irmler, Ulrich, Klimaszewski, Jan, Herman, Lee H. & Chandler, Donald S., 2013, A complete checklist with new records and geographical distribution of the rove beetles (Coleoptera, Staphylinidae) of Brazil, Insecta Mundi 2013 (277), pp. 1-419 : 170 170
Ceutorhynchus laetus     Yunakov, Nikolai, Nazarenko, Vitalij, Filimonov, Rostislav & Volovnik, Semyon, 2018, A survey of the weevils of Ukraine (Coleoptera: Curculionoidea), Zootaxa 4404 (1), pp. 1-494 : 452 452
Coleoptera   new species  Ito, Noboru, 2013, Four new species of the genus Oxycentrus from Asia (Coleoptera: Carabidae: Harpalini), Bulletin of the Osaka Museum of Natural History 67, pp. 1-9 : 4 4
Conocephalus (Chloroxiphidion) laetus     Nagar, Rajendra, Swaminathan, Rajamani & Meena, Ashok Kumar, 2023, Checklist of Tettigoniidae (Orthoptera: Ensifera) from India, Zootaxa 5336 (3), pp. 349-372 : 351 351
Pirangoclytus laetus     Clarke, Robin & Zamalloa, Sonia, 2018, Bolivian anthophilous Cerambycinae (Coleoptera: Cerambycidae) host flower records, Insecta Mundi 2018 (640), pp. 1-35 : 9 9
Lepturges (Chaeturges) laetus     Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, Zootaxa 1023 (1), pp. 1-760 : 1-760 1-760
Schizanthus laetus     Morales-Fierro, Vanezza, Munoz-Schick, Melica & Moreira-Munoz, Andres, 2020, Synopsis of Schizanthus Ruiz & Pav. (Solanaceae), a genus endemic to the southern Andes, PhytoKeys 154, pp. 57-102 : 57 57
Montrouzierellus laetus     Roell, Talita, Lemaître, Valérie A., Webb, Michael D. & Campos, Luiz A., 2023, An annotated and illustrated Type Catalogue of the predacious Shieldbugs (Hemiptera: Heteroptera: Pentatomidae: Asopinae) in the Collection of the Natural History Museum, London, Zootaxa 5232 (1), pp. 1-105 : 50 50
Palarus laetus     Gadallah, Neveen S., 2020, Biodiversity of the aculeate wasps (Hymenoptera: Aculeata) of the Arabian Peninsula: Apoidea (Spheciformes), Crabronidae, Zootaxa 4754 (1), pp. 20-73 : 20-73 20-73
Coleus laetus   comb. nov.  Paton, Alan J., Mwanyambo, Montfort, Govaerts, Rafael H. A., Smitha, Kokkaraniyil, Suddee, Somran, Phillipson, Peter B., Wilson, Trevor C., Forster, Paul I. & Culham, Alastair, 2019, Nomenclatural changes in Coleus and Plectranthus (Lamiaceae): a tale of more than two genera, PhytoKeys 129, pp. 1-158 : 54 54
Hydrodessus laetus     Benetti, Cesar J., Michat, Mariano C. & Hamada, Neusa, 2020, Hydrodessus ducke sp. n. and new records of other species of the genus (Coleoptera, Dytiscidae, Bidessini), Zootaxa 4743 (1), pp. 47-60 : 51 51
Montrouzierellus laetus     Roell, Talita, Lemaître, Valérie A., Webb, Michael D. & Campos, Luiz A., 2023, An annotated and illustrated Type Catalogue of the predacious Shieldbugs (Hemiptera: Heteroptera: Pentatomidae: Asopinae) in the Collection of the Natural History Museum, London, Zootaxa 5232 (1), pp. 1-105 : 36 36
Amblydromalus laetus     Lofego, Antonio Carlos, Barbosa, Marina Ferraz De Camargo, Demite, Peterson Rodrigo & Moraes, Gilberto José De, 2024, Phytoseiidae (Acari: Mesostigmata) of the subfamily Amblyseiinae from Brazil, Zootaxa 5439 (1), pp. 1-306 : 155 155
Kristotomus laetus     Broad, Gavin R., 2016, Checklist of British and Irish Hymenoptera - Ichneumonidae, Biodiversity Data Journal 4, pp. 9042-9042 : 9042 9042
Lepturges (Chaeturges) laetus     De Barros, Rafael C., Da Fonseca, Mailson G., Vendramini, Vinicius E. & De Arvarenga Julio, Carlos E., 2019, Species of Lamiinae (Insecta, Coleoptera, Cerambycidae) from east Paraná State (Brazil), with new geographic records, Zootaxa 4545 (2), pp. 179-204 : 183 183
Conocephalus (Chloroxiphidion) laetus     Gupta, Sunil Kumar & Chandra, Kailash, 2018, Systematic study of Tettigoniidae (Orthoptera: Insecta) fauna from Chhattisgarh, India, Records of the Zoological Survey of India 118 (4), pp. 325-336 : 327 327
Paederus laetus     Navarrete-Heredia, José Luis, Gómez-Rodríguez, Cecilia & Newton, Alfred F., 2006, Staphylinidae (Insecta: Coleoptera) of the Biologia Centrali-Americana: Current status of the names, Zootaxa 1251 (1251), pp. 1-70 : 49 49
Kristotomus laetus     Ghahari, Hassan & Jussila, Reijo, 2016, Contribution to the knowledge of the fauna of Ichneumonidae (Hymenoptera: Ichneumonoidea) from Iran, Beiträge Zur Entomologie = Contributions to Entomology 66 (1), pp. 119-124 : 122 122
Heterosternuta laetus     Nilsson, Anders N., 2007, Some necessary corrections of the spelling of species-group names within the family Dytiscidae (Coleoptera), Zootaxa 1615, pp. 49-54 : 52 52
Stirellus laetus     Webb, Michael D. & Viraktamath, Chandra A., 2009, 2163, Zootaxa 2163, pp. 1-64 : 30 30
Paramenexenus laetus     Brock, Paul D., Marshall, Judith A., Beccaloni, George W. & Harman, Allan J. E., 2016, The types of Phasmida in the Natural History Museum, London, UK, Zootaxa 4179 (2), pp. 151-208 : 179 179
Turbo (Euninella) laetus     Herbert, David G., 2015, An annotated catalogue and bibliography of the taxonomy, synonymy and distribution of the Recent Vetigastropoda of South Africa (Mollusca), Zootaxa 4049 (1), pp. 1-98 : 70 70
Paramesius laetus     Notton, David G., 2014, A catalogue of the types of Diapriinae (Hymenoptera, Diapriidae) at the Natural History Museum, London, European Journal of Taxonomy 75, pp. 1-123 : 44 44
Euryparyphes laetus     Chobanov, Dragan & Massa, Bruno, 2022, On some Moroccan Pamphagidae, with the description of a new species of Euryparyphes (Orthoptera: Caelifera), Zootaxa 5104 (3), pp. 409-425 : 417 417
Saprinus (Saprinus) laetus     Lackner, Tomas & Leschen, Richard A. B., 2017, A monograph of the Australopacific Saprininae (Coleoptera, Histeridae), ZooKeys 689, pp. 1-263 : 125-134 125-134
Pristomerus laetus   sp. nov.  Klopfstein, Seraina, 2016, Revising Australian Pristomerus (Hymenoptera, Ichneumonidae, Cremastinae): species with a tooth on the hind femur, Zootaxa 4168 (2), pp. 201-238 : 221-222 221-222
Lineatopaussus laetus     Merene, Yeshitla, Lorenz, Wolfgang, Opgenoorth, Lars, Woldehawariat, Yitbarek & Schmidt, Joachim, 2023, Ground and tiger beetles (Coleoptera: Carabidae, Cicindelidae) of the Federal Democratic Republic of Ethiopia: a provisional faunistic checklist based on literature data, Zootaxa 5247 (1), pp. 1-345 : 68 68
Zelotes laetus     Sherwood, Danniella, Marusik, Yuri M., Sharp, Adam & Ashmole, Philip, 2023, A survey of Gnaphosidae (Arachnida, Araneae) from Ascension Island with description of a new species of Australoechemus Schmidt & Piepho, 1994, African Invertebrates 64 (3), pp. 291-302 : 291 291
Metrobates laetus     Moreira, Felipe Ferraz Figueiredo, Barbosa, Julianna Freires, Ribeiro, José Ricardo Inacio & Alecrim, Viviani Pereira, 2011, Checklist and distribution of semiaquatic and aquatic Heteroptera (Gerromorpha and Nepomorpha) occurring in Brazil 2958, Zootaxa 2958 (1), pp. 1-74 : 10 10
Notocupes laetus key    Strelnikova, O. D. & Yan, E. V., 2023, ON SPLITTING OF THE GENUS NOTOCUPES (COLEOPTERA: ARCHOSTEMATA): NEW DATA ON MORPHOLOGY AND TAXONOMY, Far Eastern Entomologist 488, pp. 1-28 : 19-20 19-20
Lamelligomphus laetus key    Wilson, Keith Duncan Peter & Xu, Zaifu, 2009, Gomphidae of Guangdong & Hong Kong, China (Odonata: Anisoptera) 2177, Zootaxa 2177, pp. 1-62 : 34-36 34-36
Lactarius luculentus var. laetus     Barge, Edward G. & Cripps, Cathy L., 2016, New reports, phylogenetic analysis, and a key to Lactarius Pers. in the Greater Yellowstone Ecosystem informed by molecular data, MycoKeys 15, pp. 1-58 : 44-45 44-45
Colastocoris laetus   new species  Miller, Norman Cecil Egerton, 1959, A new subfamily, new genera and new species of Reduviidae (Hemiptera-Heteroptera), Bulletin of the British Museum (Natural History). Entomology 8, No. 2, pp. 47-117 : 101 101
Trigonopterus laetus     Riedel, Alexander & Taenzler, Rene, 2016, Revision of the Australian species of the weevil genus Trigonopterus Fauvel, ZooKeys 556, pp. 97-162 : 127-128 127-128
Peridinetus laetus     Prena, Jens, 2010, The Middle American species of Peridinetus Schönherr (Coleoptera: Curculionidae: Baridinae), Zootaxa 2507, pp. 1-36 : 22-23 22-23
Pholetesor laetus     Liu, Zhen, He, Jun-Hua & Chen, Xue-Xin, 2016, The genus Pholetesor Mason, 1981 (Hymenoptera, Braconidae, Microgastrinae) from China, with descriptions of eleven new species, Zootaxa 4150 (4), pp. 351-387 : 363 363
Chrysops laetus     Wolff, Marta & Miranda-Esquivel, Daniel Rafael, 2016, FAMILY TABANIDAE, Zootaxa 4122 (1), pp. 249-301 : 251-252 251-252
Clavus laetus     Kilburn, Richard N., Fedosov, Alexander & Kantor, Yuri, 2014, The shallow-water New Caledonia Drilliidae of genus Clavus Montfort, 1810 (Mollusca: Gastropoda: Conoidea), Zootaxa 3818 (1), pp. 1-69 : 42 42
Atractides laetus     Gerecke, Reinhard, 2003, Water mites of the genus Atractides Koch, 1837 (Acari: Parasitengona: Hygrobatidae) in the western Palaearctic region: a revision, Zoological Journal of the Linnean Society 138, pp. 141-378 : 303-305 303-305
Bracon (Bracon) intercessor var. laetus     Papp, Jenő & Xviii, Budapest, 2012, A revision of the Bracon Fabricius species in Wesmael’s collection deposited in Brussels (Hymenoptera: Braconidae: Braconinae), European Journal of Taxonomy 21, pp. 1-154 : 133-134 133-134
Palarus laetus     Jahantigh, Fatemeh, Rakhshani, Ehsan, Mokhtari, Azizollah & Ramroodi, Sara, 2017, Catalogue of Ampulicidae, Crabronidae and Sphecidae of Iran (Hymenoptera, Apoidea), Zootaxa 4307 (1), pp. 1-96 : 69 69
Diptera   new species  Wiedemann, C. R. W., 1824, Munus rectoris in Academia Christiana Albertina aditurus analecta entomologica ex Museo Regio Havniensi maxime congesta profert iconibusque illustrat., Regio typographeo scholarum : -1 -1
Isocyrtus laetus     Dale-Skey, Natalie, Askew, Richard R., Noyes, John S., Livermore, Laurence & Broad, Gavin R., 2016, Checklist of British and Irish Hymenoptera - Chalcidoidea and Mymarommatoidea, Biodiversity Data Journal 4, pp. 8013-8013 : 8013 8013
Pirangoclytus laetus     Wappes, James E., Lingafelter, Steven W., Monné, Miguel A. & Arias, Julieta Ledezma, 2013, Additions to the known Vesperidae and Cerambycidae (Coleoptera) of Bolivia, Insecta Mundi 2013 (319), pp. 1-25 : 13 13
Acteon laetus     Valdés, Ángel, 2008, Deep-sea “ cephalaspidean ” heterobranchs (Gastropoda) from the tropical southwest Pacific, Mémoires du Muséum national d'Histoire naturelle 196, pp. 587-792 : 612-614 612-614
Bulimus laetus     Breure, Abraham S. H. & Ablett, Jonathan D., 2014, Annotated type catalogue of the Bulimulidae (Mollusca, Gastropoda, Orthalicoidea) in the Natural History Museum, London, ZooKeys 392, pp. 1-367 : 84-85 84-85
Hymenoptera   new species  Fabricius, Johann Christian, 1793, Entomologia systematica emendata et aucta. Secundum classes, ordines, genera, species, adjectis synonimis, locis, observationibus, descriptionibus, C. G. Proft, Fil. et Soc. : 291 291
Hymenoptera   new species  Walker, Francis, 1833, Monographia Chalcidum [continued]., The Entomological Magazine 1, No. 5, pp. 455-466 : 455-466 455-466
Platypelis laetus   sp. nov.  Rakotoarison, Andolalao, Scherz, Mark D., Koehler, Joern, Ratsoavina, Fanomezana M., Hawlitschek, Oliver, Megson, Steven, Vences, Miguel & Glaw, Frank, 2020, Frogs of the genus Platypelis from the Sorata massif in northern Madagascar: description of a new species and reports of range extensions, Zoosystematics and Evolution 96 (1), pp. 263-274 : 263 263
Pholetesor laetus     Broad, Gavin R., Shaw, Mark R. & Godfray, H. Charles J., 2016, Checklist of British and Irish Hymenoptera - Braconidae, Biodiversity Data Journal 4, pp. 8151-8151 : 8151 8151
Palarus laetus     Madl, Michael, 2018, A preliminary catalogue of the Hymenoptera (Insecta) of the Republic of Djibouti, Linzer biologische Beiträge 50 (2), pp. 907-967 : 940-941 940-941
Sphecixenos laetus   comb. nov.  Benda, Daniel, Pohl, Hans, Nakase, Yuta, Beutel, Rolf & Straka, Jakub, 2022, A generic classification of Xenidae (Strepsiptera) based on the morphology of the female cephalothorax and male cephalotheca with a preliminary checklist of species, ZooKeys 1093, pp. 1-134 : 1 1
Ochicanthon laetus     Latha, Mathews, Cuccodoro, Giulio & Sabu, Thomas K., 2011, Taxonomy of the dung beetle genus Ochicanthon Vaz-de-Mello (Coleoptera: Scarabaeidae: Scarabaeinae) of the Indian subcontinent, with notes on distribution patterns and flightlessness, Zootaxa 2745, pp. 1-29 : 13 13
Hymenoptera   new species  Smith, David R., 2015, A NEW PRISTAULACUS KIEFFER (HYMENOPTERA: AULACIDAE) FROM MEXICO, Proceedings of the Entomological Society of Washington 117, No. 4, pp. 495-498 : 495-498 495-498
Molorchus laetus     Gupta, Rajeev & Vitali, Francesco, 2017, The checklist of longhorn beetles (Coleoptera: Cerambycidae) from India, Zootaxa 4345 (1), pp. 1-317 : 69 69
Palarus laetus     Madl, Michael, C, Bembecinus, F, Bembix & C, Brachystegus, 2023, A catalogue of the family Crabronidae (Hymenoptera, Apoidea) of Eritrea, Linzer biologische Beiträge 55 (1), pp. 241-264 : 246 246
Ulocyphaleus laetus   sp. nov.  Leschen, Richard A. B., Escalona, Hermes E. & Elgueta, Mario, 2016, Phylogeny of the Gondwanan beetle family Ulodidae (Tenebrionoidea), Zootaxa 4138 (3), pp. 441-473 : 454-467 454-467
Thyridanthrax laetus     Greathead, David J., 2006, New records of Namibian Bombyliidae (Diptera), with notes on some genera and descriptions of new species, Zootaxa 1149 (1), pp. 1-88 : 83-84 83-84
Delfimeus laetus     Hassan, Muhammad Asghar, Oswald, John D., Zia, Ahmed & Liu, Xingyue, 2019, Neuropterida (Insecta: Megaloptera, Raphidioptera, Neuroptera) of Pakistan: a catalogue and faunistic review, Zootaxa 4686 (4), pp. 497-541 : 522 522
Nacaeus laetus     Irmler, Ulrich, 2015, Osoriinae of Cuba with description of new species and an identification key (Coleoptera: Staphylinidae), Acta Entomologica Musei Nationalis Pragae 55 (1), pp. 145-172 : 157 157
Diptera   new species  Meigen, Johann Wilhelm, 1824, Systematische Beschreibung der bekannten europäischen zweiflügeligen Insekten. Vierter Theil., Schulz-Wundermann : -1 -1
Palarus laetus     Madl, Michael, C, Bembecinus, F, Bembix & C, Brachystegus, 2023, A catalogue of the family Crabronidae (Hymenoptera, Apoidea) of Eritrea, Linzer biologische Beiträge 55 (1), pp. 241-264 : 246 246
Kristotomus laetus     Broad, Gavin R., 2016, Checklist of British and Irish Hymenoptera - Ichneumonidae, Biodiversity Data Journal 4, pp. 9042-9042 : 9042 9042
Pholetesor laetus     Liu, Zhen, He, Jun-Hua & Chen, Xue-Xin, 2016, The genus Pholetesor Mason, 1981 (Hymenoptera, Braconidae, Microgastrinae) from China, with descriptions of eleven new species, Zootaxa 4150 (4), pp. 351-387 : 363-366 363-366
Paralastor laetus     Carpenter, James M. & Brown, Graham R., 2021, Catalogue of the Australian Eumeninae (Hymenoptera: Vespidae), Zootaxa 4919 (1), pp. 1-68 : 43 43
Diostracus laetus   sp. nov.  Zhu, Yajun, Tang, Chufei & Yang, Ding, 2023, Six new species of Diostracus Loew (Diptera, Dolichopodidae) from Tibet, ZooKeys 1163, pp. 1-46 : 1 1
Oxycoleus laetus     Nascimento, Francisco Eriberto De L. & Santos-Silva, Antonio, 2021, The interesting and complex tribe Oxycoleini (Coleoptera, Cerambycidae): a new genus, new species, and taxonomic notes, Zootaxa 5060 (3), pp. 353-370 : 367-368 367-368
Promalactis laetusella   sp. nov.  Kim, Sora, Heppner, John B. & Park, Kyu-Tek, 2017, Eight new species of the genus Promalactis (Lepidoptera: Oecophoridae) from Indonesia, with a checklist of the genus, Journal of Natural History 51 (29 - 30), pp. 1671-1695 : 1687-1688 1687-1688

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Specimens